从IP地址获取MAC地址

Obtain MAC address from IP address

我正在学习 python 3.6.4,我正在尝试让这段代码工作...

我有一个 IP 地址列表(在我的 LAN 上),我需要为列表中的每个 IP 获取关联的 mac 地址。

当我 运行 代码时,我得到这个错误:

ip_addresses_as_bytes = str.encode(ip_addresses) TypeError: descriptor 'encode' requires a 'str' object but received a 'list'

我不知道如何将单个列表项转换为字节。

import subprocess
import re

def get_mac_addresses(ip_addresses):

            for ip_address in ip_addresses:
                subprocess.Popen(["ping", "-c 1", ip_address], stdout=subprocess.PIPE)

            proc = subprocess.Popen("arp -a", stdout=subprocess.PIPE)

            data = proc.communicate()[0]

            results = []

            ip_address_as_bytes = str.encode(ip_address)
            type(ip_address_as_bytes)  # ensure it is byte representation

            ip_addresses_as_bytes = str.encode(ip_addresses)
            type(ip_addresses_as_bytes)

            for ip_address_as_bytes in ip_addresses_as_bytes[:]:
                if ip_address_as_bytes in data:

                    ip_data = data[data.find(ip_address_as_bytes):]

                    mac = re.search(r"(([a-f\d]{1,2}:){5}[a-f\d]{1,2})", ip_data)

                    if mac is None:
                        mac = re.search(r"(([a-f\d]{1,2}-){5}[a-f\d]{1,2})", ip_data)

                    if mac is not None:
                        mac = mac.groups()[0].replace('-', ':').upper()

                    else:
                        mac = '00:00:00:00:00:00'

                    ip_addresses = ip_addresses_as_bytes.decode()
                    type(ip_addresses)  # ensure it is string representation

                    ip_address = ip_address_as_bytes.decode()
                    type(ip_address)  # ensure it is string representation

                    ip_addresses.remove(ip_address)

                    results += [[ip_address, mac]]

                return results

感谢任何帮助。

谢谢!

您的问题在这里:

ip_addresses_as_bytes = str.encode(ip_addresses)

ip_addresses 是一个列表,encode 需要一个字符串。

使用循环:

ip_addresses_as_bytes = []
for ip_addresse in ip_addresses:
    ip_addresses_as_bytes.append(str.encode(ip_addresses))